Power and Grounds
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Battery positive voltage is supplied at all times to the sunroof module from the 30 A S/ROOF fuse located in the underhood fuse block. Ground is supplied to the sunroof module through the module ground circuit and G200.
Ground is supplied to the sunroof switch through the switch ground circuit and G200.